Abstract

BackgroundTo identify and predict risk factors associated with recurrent spontaneous cerebrospinal fluid (CSF) rhinorrhea, a cohort study included a total of 37 adult patients with spontaneous CSF rhinorrhea were analyzed.ResultsOver a 2-year period, 37 patients of spontaneous CSF leak with exclusion of other etiologies (traumatic, congenital) were enrolled: primary (non-recurrent) (n = 20) and secondary (recurrent) (n = 17), where 83.8% were females with an average body mass index (BMI) of 36.4 kg/m2. Associated symptoms of high intracranial pressure (ICP) namely, blurred vision and unsteadiness (P-value = 0.006 and 0.01, respectively), multiparity (92.3%), and failure to localize the defect (17.6%) contributed to patients having more recurrence. Although the cribriform plate was detected frequently (n = 29.4%), they were associated with lower recurrence compared to lateral recess of sphenoid (66.6% vs 20%).ConclusionDirect endoscopic visualization and repair of skull base defects achieve a high success rate, but failure is still a possibility especially in spontaneous etiology of leaks. In a multiparous female, with high CSF pressure, lateral sphenoid recess, large size, or unidentified defect, the incidence of recurrence is much higher.Level of evidence4

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